Payroll V0.2 — Xero Rate Limit Handling Fix

Technical fix to resolve errors caused by improper handling of Xero's API rate limits.

Key changes:

• Identified root cause of rate limit errors in the current implementation
• Implemented improved rate limit handling to prevent sync failures
• Reduces errors during high-volume payroll sync operations

Part of Payroll V0.2 — delivered by Trinity Development Team, March 2026